Evidence of modified ferromagnetism at a buried Permalloy/CoO interface at room temperature

Physical Review B - Condensed Matter and Materials Physics

Volumn 75, Issue 1, 2007, Pages

  Roy, S ^a   Sanchez Hanke, C ^b   Park, S ^c,e   Fitzsimmons, M R ^c   Tang, Y J ^a   Hong, J I ^a   Smith, David J ^d   Taylor, B J ^a   Liu, X ^a   Maple, M B ^a   Berkowitz, A E ^a   Kao, C C ^b   Sinha, S K ^a,c  

^a UNIVERSITY OF CALIFORNIA   (United States)

^b BROOKHAVEN NATIONAL LABORATORY   (United States)

^c LOS ALAMOS NATIONAL LABORATORY   (United States)

^d ARIZONA STATE UNIVERSITY   (United States)

^e Korea Basic Science Institute (KBSI)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33846665324     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.75.014442     Document Type: Article

References (22)

1. Peter Grünberg, Phys. Today PHTOAD 0031-9228 10.1063/1.1359707 54 (5), 31 (2001).
2. S. A. Wolf, D. D. Awschalom, R. A. Buhrman, J. M. Daughton, S. von Molnár, M. L. Roukes, A. Y. Chtchelkanova, and D. M. Treger, Science SCIEAS 0036-8075 10.1126/science.1065389 294, 1488 (2001).
3. A. E. Berkowitz and K. Takano, J. Magn. Magn. Mater. JMMMDC 0304-8853 10.1016/S0304-8853(99)00453-9 200, 552 (1999).
4. J. Nogues and I. K. Schuller, J. Magn. Magn. Mater. JMMMDC 0304-8853 10.1016/S0304-8853(98)00266-2 192, 203 (1999).
5. W. J. Antel, Jr., F. Perjeru, and G. R. Harp, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.83.1439 83, 1439 (1999).
6. H. Ohldag, A. Scholl, F. Nolting, E. Arenholz, S. Maat, A. T. Young, M. Carey, and J. Stöhr, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett. 91.017203 91, 017203 (2003).
7. A. Scholl, M. Liberati, E. Arenholz, H. Ohldag, and J. Stöhr, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.92.247201 92, 247201 (2004).
8. H. Ohldag, T. J. Regan, J. Stöhr, A. Scholl, F. Nolting, J. Luning, C. Stamm, S. Anders, and R. L. White, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.87.247201 87, 247201 (2001).
9. F. Offi, W. Kuch, L. I. Chelaru, K. Fukumoto, M. Kotsugi, and J. Kirschner, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.67.094419 67, 094419 (2003).
10. A. Hoffmann, J. W. Seo, M. R. Fitzsimmons, H. Siegwart, J. Fompeyrine, J.-P. Locquet, J. A. Dura, and C. F. Majkrzak, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.66.220406 66, 220406 (R) (2002).
11. S. Roy, M. R. Fitzsimmons, S. Park, M. Dorn, O. Petracic, Igor V. Roshchin, Zhi-Pan Li, X. Batlle, R. Morales, A. Misra, X. Zhang, K. Chesnel, J. B. Kortright, S. K. Sinha, and Ivan K. Schuller, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.95.047201 95, 047201 (2005).
12. Ki-Suk Lee, Young-Sang Yu, and Sang-Koog Kim, Appl. Phys. Lett. APPLAB 0003-6951 10.1063/1.1920412 86, 192512 (2005).
13. C. Sánchez-Hanke and C.-C. Kao, J. Magn. Magn. Mater. JMMMDC 0304-8853 226-230, 1803 (2001).
14. The scattering factors are determined by Kramers-Kronig transformation of the absorption data. The real part of the charge scattering factor for transition metals is usually negative for energies that are slightly lower than resonance energy. Since our chosen energy is 2 eV below the respective resonance energy for Ni and Co, the real part of charge scattering factor is negative for both Ni and Co. For representative shapes of Ni and Co scattering factors near their respective 2p resonance energy, see Maurizio Sacchi and Alessandro Mirone, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.57.8408 57, 8408 (1998);
15. J. B. Kortright, Olav Hellwig, Karine Chesnel, Shouheng Sun, and Eric E. Fullerton, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.71.012402 71, 012402 (2005).
16. S. K. Sinha, E. B. Sirota, S. Garoff, and H. B. Stanley, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.38.2297 38, 2297 (1988).
17. D. R. Lee, S. K. Sinha, D. Haskel, Y. Choi, J. C. Lang, S. A. Stepanov, and G. Srajer, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.68.224409 68, 224409 (2003).
18. For Fe and 10 keV photons, σmag / σcharge ≈4× 10-6;
19. M. Blume, J. Appl. Phys. JAPIAU 0021-8979 10.1063/1.335023 57, 3615 (1985).
20. M. G. Samant, J. Stöhr, S. S. P. Parkin, G. A. Held, B. D. Hermsmeier, F. Herman, M. van Schilfgaarde, L.-C. Duda, D. C. Mancini, N. Wassdahl, and R. Nakajima, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.72.1112 72, 1112 (1994).
21. J. W. Freeland, R. H. Kodama, M. Vedpathak, S. C. Erwin, D. J. Keavney, R. Winarski, P. Ryan, and R. A. Rosenberg, Phys. Rev. B PRBMDO 0163-1829 10.1103/PhysRevB.70.033201 70, 033201 (2004).
22. G. S. D. Beach, F. T. Parker, David J. Smith, P. A. Crozier, and A. E. Berkowitz, Phys. Rev. Lett. PRLTAO 0031-9007 10.1103/PhysRevLett.91.267201 91, 267201 (2003).